This connection makes sense, as balconies are often supported by beams or brackets.
Here's a breakdown of the etymology:
* Latin: "balco" (beam)
* Italian: "balcone" (beam, balcony)
* English: "balcony"
The word entered English in the 16th century, initially referring to a raised platform in a theater. Its meaning expanded to include the external platforms attached to buildings we know today.